EP0014270B1 - Procédé et dispositif pour le taillage des flancs de la partie coupante d'un outil trempé - Google Patents

Procédé et dispositif pour le taillage des flancs de la partie coupante d'un outil trempé Download PDF

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Publication number
EP0014270B1
EP0014270B1 EP79200744A EP79200744A EP0014270B1 EP 0014270 B1 EP0014270 B1 EP 0014270B1 EP 79200744 A EP79200744 A EP 79200744A EP 79200744 A EP79200744 A EP 79200744A EP 0014270 B1 EP0014270 B1 EP 0014270B1
Authority
EP
European Patent Office
Prior art keywords
cutter blade
parting
grinding
knife
disk
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP79200744A
Other languages
German (de)
English (en)
Other versions
EP0014270A2 (fr
EP0014270A3 (en
Inventor
Erhard Dipl.Ing. Konersmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheinmetall Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Publication of EP0014270A2 publication Critical patent/EP0014270A2/fr
Publication of EP0014270A3 publication Critical patent/EP0014270A3/de
Application granted granted Critical
Publication of EP0014270B1 publication Critical patent/EP0014270B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/34—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of turning or planing tools or tool bits, e.g. gear cutters

Definitions

  • the invention relates to a method for generating surfaces of a cutting head on a hardened knife steel for use in a knife head of a gear cutting machine, and a device for carrying out the method.
  • a knife steel which is suitable for use in a cutter head of a gear cutting machine, originally originally had a rod-like shape with a square cross section.
  • This knife steel must be provided with an cutting head at one end before it is inserted into the knife head.
  • the cutting head is formed by a plurality of surfaces, more or less inclined against the knife steel axis, two of these surfaces meeting in a common cutting edge, the cutting edge.
  • the usual procedure is to insert several knife steels into a machine, as is known, for example, from CH-A-450 949.
  • a machine as is known, for example, from CH-A-450 949.
  • the same surfaces of the cutting heads of the individual knives are ground simultaneously. This is done in such a way that the grinding wheel is gradually fed against the knives by a fraction of a millimeter. In this way, the part of the knife steels to be removed is ground down in layers until the desired surface of the cutting heads is exposed.
  • a method for producing cutting edges on a knife steel is also known. Pre-grinding is done by pressing the knife steel by hand onto the side surface of a grinding wheel. The knife steel is then clamped and a grinding wheel is guided over the pre-ground surface in a known manner, which results in a fine grinding.
  • pre-grinding is generated by conventional grinding and not by cut grinding. This process is time consuming and inaccurate.
  • a considerable part of the energy required for grinding is converted into heat, which mainly flows into the knife steel. This can result in undesirable structural changes.
  • FIG. 1 shows a knife steel 5 which has a cutting head 53 at one end.
  • a rake face 55 this includes, for example, a free face 54 and a further free face 54 ′ opposite the free face 54 and not visible here.
  • Flank surface 54 and rake surface 55 together form a cutting edge 56.
  • Both flank surfaces 54, 54 ′ and the rake surface 55 are inclined in this example against a knife steel shaft 57.
  • the dashed lines indicate an original rod shape 62 of the knife steel 5.
  • a preliminary profile 61 of the cutting head 53 is shown in dash-dot lines. It also includes free surfaces 63, 63 'and a rake surface 64.
  • a separating device 1 consists of a frame 2, a motor 3 suspended thereon in a manner known per se, and a holding device 4 for a knife steel 5.
  • a wheel 7 is arranged on a drive shaft 6 of the motor 3, which wheel has a toothed belt 8 drives another wheel 9.
  • This is, together with a cut-off wheel 65 attached to a shaft 11 which is rotatably supported in a bearing part 12 and secured against axial displacement.
  • the bearing part 12 is fastened with screws 13 via a plate 23 to the vertical part 14 of a bracket 15.
  • This bracket 15 is rotatable and coaxially pivoted with an axis 16 of the motor 3 via bolts 17 in the frame 2.
  • a gear 18 is mounted on the bolt 17 between the frame 2 and the bracket 15 and firmly connected to the latter. This is in engagement with another gear 19 with a much smaller diameter.
  • This is attached to a shaft 20 which is mounted in the frame 2.
  • the shaft 20 is connected to a lever 21, at the end of which a handle 22 is provided.
  • the holding device 4 shows the holding device 4, seen from above, which is arranged displaceably on a base plate 25, which is not shown here, but can be seen in FIG.
  • the holding device 4 is also assigned a base plate 26 into which slots 27 for a guide pin 28 and slots 29 for clamping levers 30 are provided.
  • a base 31 is fixedly connected to the base plate 26. This base has an arcuate depression 33 for receiving a cradle 32, as can be seen from FIG. 2.
  • a knife steel holder 34 is placed on the cradle 32.
  • a T-shaped groove 35 is cut into the cradle 32 from below, as can also be seen from FIG. 5.
  • a sliding block 36 is arranged therein.
  • a thread of the clamping lever 37 not shown here, projects into the sliding block 36 in such a way that the cradle 32 is held in the desired position by tightening the clamping lever 37.
  • the cradle 32 has a groove 38 and a T-shaped groove 39.
  • Two pins 40 engage in the groove 38 for guiding the knife steel holder 34.
  • a sliding block is arranged in the groove 39 in a manner not shown, which cooperates in a known manner with a further clamping lever 41 in such a way that the knife steel holder 34 can be held on the cradle 32.
  • a recess 42 (Flg.5) in the knife steel holder 34, the knife steel 5 can be inserted.
  • a plate 43 and a further clamping lever 44 the knife steel 5 can be clamped in the knife steel holder 34 in known catfish.
  • a tilt stop 45 is fastened on a shaft 46.
  • a rod-shaped knife steel 5, 62 is inserted into the knife steel holder 34 of the holding device 4 of the separating device 1, positioned with a movable stop 67 in the longitudinal direction ' and tightened with the clamping lever 44.
  • 32 scales can be applied to both a side surface 58 and a surface 59 of the cradle. Markings are to be provided accordingly on the base 31 and on the knife steel holder 34. Scales and markings are not shown in detail in this exemplary embodiment. If the desired position is found, the clamping levers 37 and 41 are also tightened. Subsequently, the lateral distance of the holding device 4 from the cut-off wheel 65 still remains to be set and to fix it to the base plate 25 by means of the clamping levers 30.
  • the motor 3 is now running - this drives the cutting wheel 65 via shaft 6, wheel 7, toothed belt 8, wheel 9 and shaft 11 - the lever 21 is pressed against the handle 22, as can be seen in FIG. 3.
  • This movement is transmitted via the gears 18, 19 to the bracket 15, which thus pivots against the holding device 4.
  • the gearwheels 18, 19 are designed in such a way that the force which is introduced into the cutting device 1 on the handle 22 is amplified and now presses the cutting wheel 65 (shown in broken lines in FIG. 3) against the knife steel 5.
  • a stop not shown here, limits the movement of the cutting wheel 65 against the holder device 4.
  • the knife steel 5 is removed from the holding device 4 and re-clamped to produce the other surfaces 63 ', 64.
  • the rake and flank surfaces 64, 63, 63 ' are now re-ground to the rake and flank surfaces 55, 54, 54' in a known manner on a known knife grinding machine, which in turn is not shown here .
  • the dimensions of the motor 3 used are considerable compared to the knife steel 5 to be machined. This in order to be able to carry out the cutting process quickly and without long-lasting heat flow into the knife steel 5.
  • a further embodiment of the method according to the invention now consists in that a knife model 5a is used to adjust the holding device 4.
  • the side surface of the tilting stop 45 facing the knife steel 5 should come to rest in the plane of movement of the cut-off wheel 65 in its position according to FIG. 5. Otherwise, loosen the clamping lever 130 and move the base plate 26 accordingly.
  • the tilting stop 45 (FIG. 5) folded up, the cradle 32 and knife steel holder 34 are now set against one another such that, for example, the free surface 63 of the knife model 5a lies against the tilting stop 45.
  • To separate the tilt stop 45 is now tilted down (Fig. 4) and the knife model 5a is replaced by a knife steel 5.
  • the position of the knife steel 5 along its axis in the knife steel holder 34 can be set, for example, for knife model 5a and knife steel 5 after the stop 67.
  • a further embodiment of the method according to the invention is that the knife model 5a, which serves as a model for a whole series of knives, is produced from an easily machinable material on a knife grinding machine known per se.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (7)

1. Procédé pour réaliser des facettes (54, 54', 55) d'une tête d'outil de coupe (53) sur une ébauche d'outil en acier de coupe durci (5, 62) pour l'utilisation dans une tête d'outil de coupe d'une machine à tailler les dents, caractérisé en ce que les surfaces (63, 63', 64) d'un profil préalable (61) de la tête d'outil de coupe (53) sont réalisées à l'aide d'un dispositif de séparation (1) comportant un disque de meulage de séparation (65), en ce qu'à la séparation d'une surface latérale (60) tournée vers l'ébauche d'outil (5) du disque de meule de séparation (65), on délimite un angle aigu (a) avec un plan de déplacement (66) du disque de meule de coupe, et en ce qu'à la suite, on meule en finition les surfaces (63, 63', 64) de l'avant-profil (61) pour les facettes (54, 54', 55) de la tête d'outil de coupe (53) sur une machine à meuler les outils de coupe.
2. Dispositif pour l'exécution du procédé selon la revendication 1, caractérisé en ce que l'une des surfaces latérales (60) tournées vers l'ébauche d'outil (5) du disque de meule de séparation (65) délimite avec un plan de déplacement (66) du disque de meule de séparation (65), un angle aigu (a) et en ce que des moyens (45, 67) sont prévus pour le positionnement de l'ébauche d'outil (5, 62).
3. Procédé selon la revendication 1, caractérisé en ce que, dans le dispositif de séparation (1), un dispositif de fixation (4) pour l'ébauche d'outil (5) est réglé par rapport au disque de meule de séparation (65) à l'aide d'un modèle d'outil (5a).
4. Procédé selon la revendication 3, caractérisé en ce que le modèle d'outil (5a) est meulé dans un matériau facilement usinable sur la machine à meuler les outils.
5. Dispositif selon la revendication 2, caractérisé par une partie de palier (12) pour le disque de meule de séparation (65) monté à rotation pour régler l'angle (a).
6. Dispositif selon la revendication 2, caractérisé par une butée de basculement (45) qui, en position ouverte, vient sur une surface latérale dans le plan de placement (66) du disque de meule de séparation (65) pour le positionnement de l'ébauche d'outil (5).
7. Dispositif selon la revendication 2, caractérisé par une butée mobile (67) pour le positionnement de l'ébauche d'outil (5) dans sa direction longitudinale.
EP79200744A 1979-01-09 1979-12-10 Procédé et dispositif pour le taillage des flancs de la partie coupante d'un outil trempé Expired EP0014270B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH152/79 1974-01-09
CH15279 1979-01-09

Publications (3)

Publication Number Publication Date
EP0014270A2 EP0014270A2 (fr) 1980-08-20
EP0014270A3 EP0014270A3 (en) 1980-09-03
EP0014270B1 true EP0014270B1 (fr) 1982-10-13

Family

ID=4180430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79200744A Expired EP0014270B1 (fr) 1979-01-09 1979-12-10 Procédé et dispositif pour le taillage des flancs de la partie coupante d'un outil trempé

Country Status (4)

Country Link
US (1) US4348839A (fr)
EP (1) EP0014270B1 (fr)
JP (1) JPS5596239A (fr)
DE (1) DE2963859D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076526B1 (fr) * 1981-09-30 1985-02-06 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Dispositif de coupage
US7468407B2 (en) * 2005-09-26 2008-12-23 National Starch And Chemical Investment Holding Copporation Metal salts of quinolinols and quinolinol derivatives in curable compositions

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1733687A (en) * 1927-06-18 1929-10-29 George H Klippel Gauge for disk grinders
US1981445A (en) * 1932-01-18 1934-11-20 Eastern Cutter Salvage Corp Cutter salvage machine
US2367521A (en) * 1943-06-30 1945-01-16 George J Pero Metal-cutting machine
US2396904A (en) * 1943-09-30 1946-03-19 George W Booth Apparatus for forming cutting edges on cutting tools
US2612082A (en) * 1948-03-31 1952-09-30 Thompson Prod Inc Impeller blade support fixture
US2626491A (en) * 1950-11-10 1953-01-27 Penkoff Theodore Fixture for grinding thread cutting tools and the like
US2648173A (en) * 1952-03-07 1953-08-11 William Flett Apparatus for finishing hardened surfaces on frames for power saws
GB1090430A (en) * 1964-12-24 1967-11-08 Gleason Works Gear cutting tools and method of sharpening same
JPS497591U (fr) * 1972-04-24 1974-01-22
SE382579B (sv) * 1974-01-30 1976-02-09 Skf Ind Trading & Dev Sett att framstella skerverktyg av vendskertyp med flera skereggar
DE2409898C3 (de) * 1974-03-01 1979-03-22 Institut Sverchtvjordych Materialov Akademii Nauk Ukrainskoj Ssr, Kiew Maschine zum Bearbeiten von hartmetallbestückten Schneidstählen
JPS51111289U (fr) * 1975-03-06 1976-09-08

Also Published As

Publication number Publication date
US4348839A (en) 1982-09-14
EP0014270A2 (fr) 1980-08-20
DE2963859D1 (en) 1982-11-18
JPS5596239A (en) 1980-07-22
EP0014270A3 (en) 1980-09-03
JPH0132033B2 (fr) 1989-06-29

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